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George Bush Intcntl

$398+ Cheap flights from Portugal to George Bush Intcntl (IAH)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/7. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — IAH
feb. 28 — mar. 71
sáb. 2/28
sáb. 3/7
1 adult, Economy
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Cheap flight deals from Portugal to George Bush Intcntl

Cheapest flights from Portugal to George Bush Intcntl
Explore the most affordable flight options available from Portugal to George Bush Intcntl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 29, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/1610:10 am
LIS
-
IAH
1 stop18h 39m
Multiple Airlines
vie. 3/205:24 pm
IAH
-
LIS
1 stop14h 11m
Multiple Airlines
Deal found 1/28$651
This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/79:30 pm
LIS
-
IAH
2 stops47h 45m
Multiple Airlines
lun. 2/237:38 pm
IAH
-
LIS
1 stop27h 47m
Multiple Airlines
Deal found 1/27$698
This British Airways deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/710:40 am
LIS
-
IAH
1 stop17h 50m
British Airways
lun. 2/231:01 pm
IAH
-
LIS
2 stops23h 54m
British Airways
Deal found 1/27$736
This British Airways deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 2/1311:05 am
LIS
-
IAH
1 stop16h 31m
British Airways
vie. 2/201:16 pm
IAH
-
LIS
2 stops22h 39m
British Airways
Deal found 1/28$740
This British Airways deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 2/1511:05 am
LIS
-
IAH
1 stop16h 31m
British Airways
lun. 3/29:45 pm
IAH
-
LIS
1 stop35h 00m
British Airways
Deal found 1/29$742
This American Airlines deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/710:40 am
LIS
-
IAH
2 stops17h 50m
American Airlines
lun. 2/237:59 am
IAH
-
LIS
2 stops19h 06m
American Airlines
Deal found 1/27$745
This American Airlines deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/1410:40 am
LIS
-
IAH
1 stop16h 56m
American Airlines
lun. 3/27:59 am
IAH
-
LIS
2 stops19h 06m
American Airlines
Deal found 1/28$749
This Iberia deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/78:20 am
LIS
-
IAH
2 stops20h 22m
Iberia
lun. 2/232:09 pm
IAH
-
LIS
2 stops15h 41m
Iberia
Deal found 1/27$758

Find flight deals from Portugal to George Bush Intcntl

Keep the following information in mind while searching for Portugal to George Bush Intcntl flight deals. Data was last updated enero 29, 2026.

Round-trip from

$651
(Kiwi.com)

One-way from

$398
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$777
From Portugal to Houston George Bush Intcntl
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One-way flight from Portugal to Houston George Bush Intcntl
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Highest demand for flights based on searches. 11% potential increase in price ($119 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Portugal to George Bush Intcntl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated enero 29, 2026.
Use the filters below to find and compare flights from Portugal to Houston George Bush Intcntl Airport that are best for you.

Fly from

Portugal

Fly to

George Bush Intcntl

Route

Depart

Return

Price

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

lun. 3/16

10:10 am-11:49 pm

1 stop18h 39m

Houston George Bush Intcntl

vie. 3/20

5:24 pm-12:35 pm

1 stop14h 11m

$651

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

sáb. 2/14

10:40 am-9:36 pm

1 stop16h 56m

Houston George Bush Intcntl

lun. 3/2

9:45 pm-2:45 pm

1 stop35h 00m

$740

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

vie. 2/13

11:05 am-9:36 pm

1 stop16h 31m

Houston George Bush Intcntl

vie. 2/20

1:16 pm-5:55 pm

2 stops22h 39m

$740

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

dom. 2/15

11:05 am-9:36 pm

1 stop16h 31m

Houston George Bush Intcntl

lun. 3/2

9:45 pm-2:45 pm

1 stop35h 00m

$742

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

vie. 2/13

8:20 am-11:53 pm

2 stops21h 33m

Houston George Bush Intcntl

vie. 2/20

9:45 am-8:50 am

2 stops17h 05m

$747

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

sáb. 2/14

10:40 am-9:36 pm

1 stop16h 56m

Houston George Bush Intcntl

lun. 3/2

7:59 am-9:05 am

2 stops19h 06m

$749

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

dom. 2/15

5:00 am-8:09 pm

2 stops21h 09m

Houston George Bush Intcntl

lun. 3/2

12:47 pm-3:10 pm

2 stops20h 23m

$843

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

sáb. 3/21

5:00 am-8:12 am

2 stops32h 12m

Houston George Bush Intcntl

sáb. 3/28

4:30 pm-9:45 pm

1 stop24h 15m

$880

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

sáb. 3/21

11:40 am-8:10 pm

1 stop37h 30m

Houston George Bush Intcntl

sáb. 3/28

9:05 pm-9:55 am

1 stop30h 50m

$958

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

dom. 2/22

5:00 am-6:15 pm

1 stop19h 15m

Houston George Bush Intcntl

jue. 2/26

1:25 pm-8:10 am

1 stop12h 45m

$966

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 17 results
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Best time to book a flight from Portugal to George Bush Intcntl

Have a flexible travel schedule? Discover the best time to fly to George Bush Intcntl from Portugal with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portugal to Houston George Bush Intcntl Airport
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing George Bush Intcntl

Get insights into the airlines that provide service to George Bush Intcntl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to George Bush Intcntl. Reviews last updated enero 29, 2026.
Peruse reviews from past customers who have flown with United Airlines from Portugal to Houston George Bush Intcntl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,215 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
9,215 reviews
United Airlines
7.4
Good
9,215 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Related info for your journey

Find useful and relevant information for your journey from Portugal to George Bush Intcntl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Portugal to Houston George Bush Intcntl Airport?

    British Airways and American Airlines can get you from Portugal to Houston George Bush Intcntl Airport in just under 16h 56m. Your travel time can differ by up to 4h 37m. Portugal and Houston George Bush Intcntl Airport are separated by a distance of 4767 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • Can I find deals for flights from Portugal to George Bush Intcntl that include hotel bookings?

    Yes. In addition to deals on Portugal to George Bush Intcntl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portugal to George Bush Intcntl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to George Bush Intcntl.

  • Can I find deals for business class flights from Portugal to George Bush Intcntl?

    Yes. Cheapflights offers flight deals from Portugal to George Bush Intcntl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Houston George Bush Intcntl Airport?

Book flights to Houston George Bush Intcntl Airport if you plan to visit one of these locations
Montgomery
Spring
Katy
The Woodlands
Tomball
Humble
Conroe
Jersey Village
Cypress

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Alternative routes for Portugal to George Bush Intcntl

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Top airline flying from Portugal to George Bush Intcntl

Discover the top airline that operate flights from Portugal to George Bush Intcntl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated enero 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$797Average$858FlexibilityNo cancel feeOn-time69%

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